10 Aug 2013 , People have squeezed oil from Western shale since the early 20th , While environmentalists deride oil shale as "dirty fuel," Utah's , to reduce the pollution/dust coming from mining and the crushers, refining, etc of products

Petrosix is the world's largest surface oil shale pyrolysis retort with an 11 metres (36 ft) diameter , the oil shale pyrolysis After mining, the shale is transported by trucks to a crusher and screens, where it is reduced to particles (lump shale)

The Glen Davis Shale Oil Works was a shale oil extraction plant in Glen Davis, New South , The shale was crushed by a Pennsylvania single-roll type crusher and was then conveyed into the retorts The company planned to use two tunnel.

Shale oil extraction is an industrial process for unconventional oil production This process , True in situ processes do not involve mining or crushing the oil shale Modified in situ processes involve drilling and fracturing the target oil shale.